Fig. 62: Discrete inputs - state N.O.
In the state N.O., no potential is present during normal operation; if an alarm is issued or
control operation is performed, the input is energized.
Fig. 63: Discrete inputs - state N.C.
In the state N.C., a potential is continuously present during normal operation; if an alarm
is issued or control operation is performed, the input is de-energized.
The N.O. or N.C. contacts may be connected to the signal terminal as well as to the
ground terminal of the discrete input (╚═▷ “Schematic and terminal assignment”).
3.3.10
Relay Outputs
General notes
CAUTION!
The relay output "Ready for operation" must be integrated into the alarm chain to make
sure that if this relay falls o an appropriate action can be taken.
For information on interference suppressing circuits when connecting 24 V relays, please
refer to ╚═▷ “3.5 Connecting 24 V Relays”.
Schematic and terminals
Fig. 64: Relay outputs - schematic
Terminal Description A
max
Common N.O.
A C Form A
30 31 Relay output [R 01] All
Fixed to "Ready for operation"
1
2.5
mm²
67LS-5 v2 Series37650
3 Installation
3.3 Setup Connections
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